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PTN78060WAZT Datasheet(PDF) 4 Page - Texas Instruments |
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PTN78060WAZT Datasheet(HTML) 4 Page - Texas Instruments |
4 / 26 page ELECTRICAL CHARACTERISTICS PTN78060W, PTN78060H SLTS229B – NOVEMBER 2004 – REVISED JUNE 2009................................................................................................................................................... www.ti.com operating at 25°C free-air temperature, VI = 24 V, VO = 12 V, IO = IO (max), CI = 3 × 4.7 µF, CO = 100 µF (unless otherwise noted) PTN78060H PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VO = 12 V 0 3 (1) TA = 85°C, natural convection IO Output current VO = 15 V 0 3 (1) A airflow VO = 22 V 0 2 (1) VI Input voltage range Over IO range 15 (2) 36 V Set-point voltage tolerance TA = 25°C ±2%(3) Temperature variation –40°C to +85°C ±0.5% Line regulation Over VI range ±10 mV VO Load regulation Over IO range ±10 mV Includes set point, line, load Total output voltage variation ±3% (3) –40 < TA < 85°C VI < 19 V 11.85 VI – 3 19 V ≤ VI ≤ 25 V 11.85 VI – 4 VO (adj) Output voltage adjust range V VI ≥ 26 V 11.85 22 VI = 24 V, RSET = 383 k Ω, VO = 12 V 93% η Efficiency VI = 24 V, RSET = 15 kΩ, VO = 15 V 95% IO = 2 A, VI = 32 V, RSET = 95.3 Ω, VO = 22 V, 96% Output voltage ripple 20-MHz bandwidth 1.2% VO V(PP) IO (LIM) Current limit threshold ΔVO = –50 mV 5.5 A 1-A/µs load step from 50% to 100% IOmax Transient response Recovery time 100 µs VO over/undershoot 5 %VO Input high voltage (VIH) 1 Open (4) V Inhibit control (pin 3) Input low voltage (VIL) –0.1 0.3 Input low current (IIL) 0.25 mA II(stby) Input standby current Pin 3 connected to GND 17 mA FS Switching frequency Over VI and IO ranges 440 550 660 kHz CI External input capacitance Ceramic or nonceramic 14.1 (5) µF Ceramic 0 200 µF CO External output capacitance Nonceramic 100 (6) 2,000 Equivalent series resistance (nonceramic) 10 (7) m Ω Per Telcordia SR-332, 50% stress, MTBF Calculated reliability 8.9 106 Hr TA = 40°C, ground benign (1) The maximum output current is 3 amps or a maximum output power of 45 W, whichever is less. See the Application Information section for further guidance. (2) For output voltages less than 19 V, the minimum input voltage is 15 V or (VO + 3) V, whichever is greater. For output voltages of 19 V and higher, the minimum input voltage is (VO + 4) V. See the Application Information for further guidance. (3) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a tolerance of 1% with 100 ppm/°C or better temperature stability. (4) This control pin has an internal pullup, and if left open-circuit, the module operates when input power is applied. The open-circuit voltage is typically 1.5 V. A small, low-leakage (< 100 nA) MOSFET is recommended for control. See the Application Information section for further guidance. (5) Three external 4.7-µF ceramic capacitors are required across the input (VI and GND) for proper operation. Locate the capacitor close to the module. (6) 100 µF of output capacitance is required for proper operation. See the Application Information section for further guidance. (7) This is the typical ESR for all the electrolytic (nonceramic) capacitance. Use 17 m Ω as the minimum when using max-ESR values to calculate. 4 Submit Documentation Feedback Copyright © 2004–2009, Texas Instruments Incorporated Product Folder Link(s): PTN78060W PTN78060H |
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